Lighting fixture



Ma 14, 1940. v w, WILSON 2.200.611

LIGHTING FIXTURE Filed'July 29, 1937 v, lllllliln Patented May 14, 1940new PATENT OFFICE,

LIGHTING FIXTURE Wesley Wilson,

Lighting Inc, Chicago,

Illinois Chicago, 11]., assignor to Wilson 111., a corporation ofApplication July 29, 1937, Serial No. 156,274

1 Claim.

My invention relates to lighting fixtures.

One of the objects of my invention is to provide an improved reflectorhaving a supporting flange portion lying in a plane at an oblique anglewith respect to the axis of the reflector, the flange portion beingformed integrally with the reflector portion.

A further object of my invention is to provide an improved method forforming such a reflector.

A further object of my invention is to provide such a construction inwhich the reflector and flange portion may be originally formed assurfaces of revolution so thatthe initial formation may be made by aspinning process.

Further objects and advantages of the invem tion will be apparent fromthe description and claim.

In the drawing, in which several embodiments of my invention are shown,-

Figure 1 is a side elevation showing a reflector before the flangeportion has been de formed to give a tilt to the reflector;

Fig. 2 is an axial sectional view showing one method of deforming theflange to give a tilt to the reflector;

Fig. 3 is a section on the line 3-3 of Fig. 2 showing the reflectormounted;

Fig. 4 is an axial sectional view showing another iorm of reflectorhaving a supporting flange portion lying in a plane oblique to the axisof the reflector;

Fig. 5 is a section on the line 5-5 of Fig. 4;

Fig. 6 is an axial sectional view showing another form of reflector;

Fig. '7 is a side elevational view showing a reflector with thesupporting flange prior to deformation to secure the tilting of thereflector; and

Fig. 8 is an axial sectional View showing one method of deforming theflange of Fig. '7 to secure the tilting efiect.

Referring to the drawing in detail, and first to Figs. 1 to 3,inclusive, the construction shown therein comprises a reflector I havinga neck portion 2 to receive the neck of a lamp bulb and having asupporting flange portion 3 formed integrally with the reflectorportion. Fig. 1 .hows the reflector and flange prior to deformation ofthe flange. The structure shown in Fig. 1 may be formed by a spinningoperation, as the parts shown are all surfaces of revolution about theaxis of the reflector. In order to deform the flange 3, a tool and dieconstruction may be used (as shown in Fig. 2), the tool member 4 havingits lower edge inclined so as to press downwardly an annular portion 5of the sheet metal adjacent the juncture of the reflector portion I withthe flange portion 3. The action is such that the line of juncturebetween the reflector portion and flange portion will finally lie in aplane nonparallel to and intersecting the plane of the outer edge of theflange so that when the reflector is installed in an opening 5a in theceiling or the like, the axis of the reflector will be at an obliqueangle to the plane of the supporting edge of the flange portion 3. Theterraced formation of the flange 3 lends itself readily to thisdistorting action.

In Figs. 4 and 5, the distortion to secure the desired tilting of thelamp is efiected by deforming the terraced annular shoulder portion 6 between the neck 2 of the reflector and the reflector proper I. Thefixture may be formed in the first step of the forming process by aspinning process so that the shoulder connection portion t between theneck portion 2 and the reflector portion I will have a terrace-likeformation which can be readily deformed so as to secure the desired tiltof the reflector portion with respect to the lamp supported by the neckportion. This deforming action may be eflected by a suitable tool Ihaving annular edges 8 and 9 for engaging the terrace-like connectionportion 6.

In Fig. 6 is shown a construction in which the connection I between thereflector portion I and the annular lamp supporting portion II ingeneral may be crescent-shaped, the outer edge I2 of the crescent-likeconnecting portion lying in one plane, and the inner edge I3 of thecrescent-like portion lying in another plane which intersects the firstplane substantially at the point I.

In Figs. 7 and 8 is shown a different method of forming the supportingflange. In this form the reflector I and flange may be first formed asshown in Fig. '7 so as to provide a substantially flat,outwardly-extending annular flange I which may be susbequently drawn orformed to the shape shown in Fig. 8. In this drawing process, the flangeI5 may be held between spring-pressed members It and II, the springpressure on the right-hand side being considerably greater than thespring pressure on the left-hand side so that when the tool I8 is forceddownwardly, the right-hand edge of the flange I5 will be firmly heldwhile the left-hand edge will be drawn out from between the two grippingmembers I6 and II, flowing down over the corner I9 of the lower grippingmember, thus, in efiect, increasing the A sheet metal reflectorcomprising a concave reflector portion shaped as a surface of revolutionand a circularly corrugated laterally extending supporting flangeportion integral with said reflector portion and extending from theperiphery thereof, shaped as a distorted surface of revolution, thedifferent circular elements of said distorted surface of revolutionlying in different nonparallel planes intersecting the reflectingsurface of revolution.

WESLEY WILSON.

